$email = App\Config\Services::email();
$email->setTo('you@lawaondohemba@gmail.com');
$email->setFrom('noreply@efikohr.com', 'Efiko HR');
$email->setSubject('Test Message');
$email->setMessage('Hello from CI4!');
if ($email->send()) {
    echo "Sent!";
} else {
    print_r($email->printDebugger(['headers', 'subject', 'body']));
}